18804789

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{109}}^1\times {\mathrm{661}}^1$

素因数の和:805

約数の個数: 24

約数和(自身を含む): 28399800

約数和(自身を除く): 9595011

約数列:

[1, 3, 9, 29, 87, 109, 261, 327, 661, 981, 1983, 3161, 5949, 9483, 19169, 28449, 57507, 72049, 172521, 216147, 648441, 2089421, 6268263, 18804789]

約数ペア:

[(1, 18804789), (3, 6268263), (9, 2089421), (29, 648441), (87, 216147), (109, 172521), (261, 72049), (327, 57507), (661, 28449), (981, 19169), (1983, 9483), (3161, 5949)]